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Task 4. Still considering Ardglass and Newlyn, use a Welch t-test to test the following hypotheses at 5%-level: and D. Ho: overall vessel lengths at both ports have the same mean H₁: overall vessel lengths at both ports have different means Ho: vessel engine powers at both ports have the same mean H₁: vessel engine powers at both ports have different means. D

Task 4. Still considering Ardglass and Newlyn, use a Welch t-test to test the following hypotheses at 5%-level: and D. Ho: overall vessel lengths at both ports have the same mean H₁: overall vessel lengths at both ports have different means Ho: vessel engine powers at both ports have the same mean H₁: vessel engine powers at both ports have different means. D

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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could you please help me with this, for this newlyn and Ardglass are subsets i extracted from a large amount of data could you please just provide the R commands for this 

Task 4. Still considering Ardglass and Newlyn, use a Welch t-test to test the following hypotheses at 5%-level: and Ho: overall vessel lengths at both ports have the same mean H₁: overall vessel lengths at both ports have different means Ho: vessel engine powers at both ports have the same mean H₁: vessel engine powers at both ports have different means. For both tests, first compute the test statistic yourself (using simple R commands), and then re-do the test using the R function t.test() (see help(t.test) for how to use this function). Make sure that both methods give the same result. Comment on the applicability of the chosen test, and discuss the results of the test. Note: By default, the command t.test() will perform Welch t-test in R.
Transcribed Image Text:Task 4. Still considering Ardglass and Newlyn, use a Welch t-test to test the following hypotheses at 5%-level: and Ho: overall vessel lengths at both ports have the same mean H₁: overall vessel lengths at both ports have different means Ho: vessel engine powers at both ports have the same mean H₁: vessel engine powers at both ports have different means. For both tests, first compute the test statistic yourself (using simple R commands), and then re-do the test using the R function t.test() (see help(t.test) for how to use this function). Make sure that both methods give the same result. Comment on the applicability of the chosen test, and discuss the results of the test. Note: By default, the command t.test() will perform Welch t-test in R.
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